【摘要】：本文首先介紹了小型開關(guān)磁阻風力發(fā)電機系統(tǒng)的研究背景、研究現(xiàn)狀以及結(jié)構(gòu)特點,給出了開關(guān)磁阻發(fā)電機在直流微網(wǎng)中的構(gòu)成形式。其次,針對一臺三相12/8結(jié)構(gòu)的開關(guān)磁阻發(fā)電機,通過實驗獲取了四個關(guān)鍵位置的磁鏈數(shù)據(jù),得到了其磁鏈方程,在此基礎(chǔ)上給出了轉(zhuǎn)矩方程、電壓方程和運動方程,搭建了其數(shù)值仿真模型并進行了驗證。然后,給出了網(wǎng)側(cè)電壓波動的線性分析模型,利用非線性模型對相電流峰值進行了定量分析,給出了限制電流峰值的方法,并分析了系統(tǒng)穩(wěn)態(tài)運行點的轉(zhuǎn)移。接著,本文給出了開關(guān)磁阻風力發(fā)電機的系統(tǒng)硬件組成,分析了基于速度擾動的變步長最大功率跟蹤方法實現(xiàn)過程,以及與電壓閉環(huán)協(xié)調(diào)控制實現(xiàn)功率平衡控制的方法,并針對以TMS320F28335為核心的控制器,設(shè)計了軟件流程圖。最后,利用搭建的仿真模型對系統(tǒng)控制策略進行了可行性驗證,并在樣機實驗平臺上進行了實驗驗證。仿真和實驗結(jié)果表明本文給出的最大功率跟蹤方法能快速實現(xiàn)最大風能捕獲,提高風速變化下系統(tǒng)穩(wěn)定性;給出的功率平衡控制方法在保證直流母線電壓穩(wěn)定的前提下,能實現(xiàn)風能最大化地利用。
[Abstract]:This paper first introduces the research background, research status and structure characteristics of the small switched reluctance wind turbine system, and gives the form of the switched reluctance generator in the DC microgrid. Secondly, for a three-phase switched reluctance generator with 12 / 8 structure, the flux data of four key positions are obtained experimentally, and the flux equations are obtained. On this basis, the torque equation, voltage equation and motion equation are given. The numerical simulation model is built and verified. Then, the linear analysis model of voltage fluctuation on the grid side is given, the phase current peak value is quantitatively analyzed by using the nonlinear model, the method of limiting the peak current value is given, and the steady state operating point transfer of the system is analyzed. Then, the hardware structure of switched reluctance wind turbine is given, and the realization process of variable step maximum power tracking method based on velocity disturbance is analyzed, and the method of power balance control is realized in coordination with voltage closed loop control. The software flow chart is designed for the controller based on TMS320F28335. Finally, the feasibility of the system control strategy is verified by using the simulation model, and the experimental verification is carried out on the prototype experimental platform. The simulation and experimental results show that the maximum power tracking method presented in this paper can quickly realize the maximum wind energy capture and improve the stability of the system under the wind speed change. The proposed power balance control method can maximize the utilization of wind energy on the premise that the DC bus voltage is stable.
【學位授予單位】：中國礦業(yè)大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TM315

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相關(guān)碩士學位論文 前1條

1 張慧;開關(guān)磁阻發(fā)電機系統(tǒng)的研究[D];浙江大學;2003年

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本文編號：2369293